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Design and Analysis of Clinical Trials

Design and Analysis of Clinical Trials

Design and Analysis of Clinical Trials. Instructor: Jen-pei Liu, Ph.D. Department of Statistics National Cheng-Kung University Division of Biostatistics, National Health Research

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2.2k views • 167 slides
Lecture 5: Omitted Variables & Measurement Errors

Lecture 5: Omitted Variables & Measurement Errors

SSSII Gwilym Pryce www.gpryce.com. Lecture 5: Omitted Variables & Measurement Errors. Plan:. (1) Regression Assumptions (2) Omitted variables [l(b)] (3) Inclusion of Irrelevant Variables [1(c)] (4) Errors in variables [1(d)]

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700 views • 29 slides
STA 291 Spring 2010

STA 291 Spring 2010

STA 291 Spring 2010. Lecture 5 Dustin Lueker. Measures of Central Tendency. Mean - Arithmetic Average . Median - Midpoint of the observations when they are arranged in increasing order. Notation: Subscripted variables n = # of units in the sample N = # of units in the population

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368 views • 26 slides
STA 291 Fall 2009

STA 291 Fall 2009

STA 291 Fall 2009. Lecture 6 Dustin Lueker. Measures of Variation. Statistics that describe variability Two distributions may have the same mean and/or median but different variability Mean and Median only describe a typical value, but not the spread of the data Range Variance

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272 views • 16 slides
Section 3.5/3.5

Section 3.5/3.5

Section 3.5/3.5. Using Measures of Position to Describe Spread?. Percentile. The p th percentile is a value such that p percent of the observations fall below or at that value. Finding Quartiles . Splits the data into four parts Arrange the data in order

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248 views • 13 slides

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